EP0712919A1 - The use of synthetic silicates for fire-proof glasses - Google Patents

The use of synthetic silicates for fire-proof glasses Download PDF

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Publication number
EP0712919A1
EP0712919A1 EP95116469A EP95116469A EP0712919A1 EP 0712919 A1 EP0712919 A1 EP 0712919A1 EP 95116469 A EP95116469 A EP 95116469A EP 95116469 A EP95116469 A EP 95116469A EP 0712919 A1 EP0712919 A1 EP 0712919A1
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EP
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Prior art keywords
fire protection
fire
flame
swellable
solution
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Granted
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EP95116469A
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German (de)
French (fr)
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EP0712919B1 (en
Inventor
Harald Dr. Bauer
Wolf-Dieter Pirig
Volker Thewes
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Clariant Produkte Deutschland GmbH
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Hoechst AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165Functional features of the laminated safety glass or glazing
    • B32B17/10311Intumescent layers for fire protection
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00Fireproofing materials
    • C09K21/02Inorganic materials

Definitions

  • the invention relates to the use of swellable synthetic silicates in fire protection glasses, a method for producing such fire protection glasses and fire protection glasses that contain such silicates.
  • Elements for fire protection glazing generally consist of several glass panes arranged one behind the other, the spaces between which are filled with a flame-retardant layer ("fire protection compound"), for example a silicate compound.
  • fire protection compound for example a silicate compound.
  • the silicate mass is heated and expands to a coarse-pored foam as a result of water evaporation. This foam holds the glass splinters that occur when the pane breaks and gradually melts with the glass splinters.
  • the prior art contains a number of methods for producing fire protection compositions and the properties of such fire protection compositions.
  • DE-A-40 20 459 describes a method for producing an optically clear fire protection glass pane, a fire protection pre-composition made of aluminum phosphate, acrylic acid derivatives, a photo hardener and water being poured into a space between two panes or in a thin liquid form on a glass pane. This fire protection pre-mass is then converted into the actual fire protection mass by irradiation with ultraviolet light.
  • solutions containing aluminum phosphate are applied to a glass pane and dried in air, optionally under the action of heat, to a specific moisture content, a fire protection composition being obtained.
  • EP-A-306 677 describes a method for producing a fire protection composition foamed in the event of fire for fire-shielding glazing, in particular for fire-shielding glazing from at least two glass panes and at least one pane space in which the fire protection composition is arranged, a water-insoluble aluminum salt, an inorganic acid and a quantity of water is brought together and converted into a fire protection compound.
  • the fire protection compound produced contains hydrated metal salt.
  • the layer applied in this way is dried over a long period of time at elevated temperature.
  • DE-A-34 46 202 describes a method for producing a translucent, solid fire protection layer made of an expandable material, a layer of a hydrated alkali metal silicate dissolved in water, which may have an auxiliary substance, on a substrate (for example on a glass pane), is applied and this layer is heated and dried in a drying chamber and with a drying atmosphere which contains water vapor and can contain helium and is circulated at a temperature of about 100 ° C.
  • the drying atmosphere can be composed in different ways.
  • the invention therefore relates to the use of swellable, synthetic layered silicates of the saponite and / or hectorite type as a flame-retardant component in fire-resistant glasses.
  • Swellable, synthetic layered silicate in aqueous solution is preferably used.
  • the sheet silicate is usually used together with conventional additives, such as salts and non-crystalline silicates.
  • the object is also achieved by a method for producing fire protection glass, which is characterized in that swellable, synthetic layered silicates of the saponite and / or hectorite type are introduced between at least two glasses.
  • the swellable, synthetic layered silicates are preferably introduced in the form of their aqueous solutions.
  • the solution preferably contains 0.1 to 30, particularly preferably 3 to 25% by weight of swellable, synthetic layered silicate.
  • the solution can contain 0 to 18% by weight of salts and 0 to 35% by weight of aqueous sodium silicate solution (based on the solids content).
  • Salts for the purposes of the invention are sulfates, chlorides, fluorides, nitrates, carbonates, hydrogen carbonates, phosphates, polyphosphates and hydroxides of lithium, potassium, sodium, ammonium and magnesium.
  • non-crystalline silicates can also be contained.
  • the solution is introduced in a thickness of 1 to 30, preferably 2 to 15 mm, between at least two glasses.
  • the solution is generally applied to a disk in the aforementioned thickness and distributed and then another disk is applied.
  • the invention also relates to a fire protection pane, consisting of at least two glass panes with a flame-retardant layer in between, the flame-retardant layer containing swellable, synthetic layered silicates of the saponite and / or hectorite type.
  • the thickness of the flame-retardant layer is between 1 and 30, preferably between 2 and 15 mm.
  • the thickness of the flame-retardant layer in the fire protection panel is dimensioned so that the fire protection standard of DIN 4102 (parts 2, 5, 13) is met. High fire resistance classes are achieved in particular with multilayer glass.
  • a synthetic hectorite (type: SKS-21, manufacturer: Hoechst AG, Frankfurt / Main) was poured onto a glass pane in the form of its aqueous solution (hectorite content: 12% by weight) and evenly distributed, and then another glass pane was placed on top.
  • the thickness of the hectorite-containing layer was 15 mm.
  • a 4% by weight solution containing hectorite was poured onto a glass plate and distributed evenly. This process was repeated for another glass plate and the glass plates were placed on top of one another in such a way that a two-layer glass was obtained by covering with a third glass plate.
  • the thickness of the layers was approximately 10 mm.
  • the above fire protection glasses of Examples 1 and 2 achieve at least fire resistance class G 30 or fire resistance class F 30 according to DIN 4102 (parts 2, 5, 13).

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Fireproofing Substances (AREA)
  • Building Environments (AREA)
  • Special Wing (AREA)

Abstract

Use of swellable synthetic saponite and/or hectorite-type layered silicates as fire preventing components in fire protection glass is claimed. Prodn. of the glass is also claimed. Further claimed is a fire protection glass pane, produced by the above method.

Description

Die Erfindung betrifft die Verwendung von quellfähigen synthetischen Silikaten in Brandschutzgläsern, ein Verfahren zur Herstellung solcher Brandschutzgläser und Brandschutzgläser, die solche Silikate enthalten.The invention relates to the use of swellable synthetic silicates in fire protection glasses, a method for producing such fire protection glasses and fire protection glasses that contain such silicates.

Elemente zur Brandschutzverglasung bestehen im allgemeinen aus mehreren, hintereinander angeordneten Glasscheiben, deren Zwischenräume mit einer flammhemmenden Schicht ("Brandschutzmasse"), beispielsweise einer Silikatmasse, gefüllt sind. Im Falle eines Brandes springt die der Brandseite zugewandte Glasscheibe, die Silikatmasse wird erhitzt und bläht sich infolge von Wasserverdampfung zu einem grobporigen Schaum auf. Dieser Schaum hält die bei einem Scheibenbruch entstehenden Glassplitter fest und verschmilzt allmählich mit den Glassplittern.Elements for fire protection glazing generally consist of several glass panes arranged one behind the other, the spaces between which are filled with a flame-retardant layer ("fire protection compound"), for example a silicate compound. In the event of a fire, the glass pane facing the fire side jumps, the silicate mass is heated and expands to a coarse-pored foam as a result of water evaporation. This foam holds the glass splinters that occur when the pane breaks and gradually melts with the glass splinters.

Bei einem länger anhaltenden Brand wiederholt sich der obige Vorgang an mehreren hintereinander angeordneten, jeweils mit einer flammhemmenden Masse gefüllten Scheiben. Auf diese Weise bleibt das gesamte Fensterelement in der Form erhalten und verhindert somit eine Ausbreitung des Brandes.In the event of a fire that lasts longer, the above process is repeated on several panes arranged one behind the other, each filled with a flame-retardant mass. In this way, the entire window element remains in shape and thus prevents the fire from spreading.

Im Stand der Technik sind eine Reihe von Verfahren zur Herstellung von Brandschutzmassen sowie die Eigenschaften solcher Brandschutzmassen enthalten.The prior art contains a number of methods for producing fire protection compositions and the properties of such fire protection compositions.

Die DE-A- 40 20 459 beschreibt ein Verfahren zur Herstellung einer optisch klaren Brandschutz-Glasscheibe, wobei eine Brandschutz-Vormasse aus Aluminiumphosphat, Acrylsäurederivaten, einem Photohärter und Wasser in dünnflüssiger Form in einen Zwischenraum zwischen zwei Scheiben oder auf eine Glasscheibe aufgegossen wird. Diese Brandschutz-Vormasse wird dann durch Bestrahlen mit ultraviolettem Licht in die eigentliche Brandschutzmasse umgewandelt.DE-A-40 20 459 describes a method for producing an optically clear fire protection glass pane, a fire protection pre-composition made of aluminum phosphate, acrylic acid derivatives, a photo hardener and water being poured into a space between two panes or in a thin liquid form on a glass pane. This fire protection pre-mass is then converted into the actual fire protection mass by irradiation with ultraviolet light.

Nach anderen aus dem Stand der Technik bekannten Verfahren werden Aluminiumphosphat-haltige Lösungen auf eine Glasscheibe aufgebracht und an der Luft, gegebenenfalls unter Einwirkung von Wärme, auf einen bestimmten Feuchtigkeitsgehalt getrocknet, wobei man eine Brandschutzmasse erhält.According to other processes known from the prior art, solutions containing aluminum phosphate are applied to a glass pane and dried in air, optionally under the action of heat, to a specific moisture content, a fire protection composition being obtained.

Die EP-A-306 677 beschreibt ein Verfahren zur Herstellung einer im Brandfall aufgeschäumten Brandschutzmasse für feuerabschirmende Verglasungen, insbesondere für feuerabschirmende Verglasungen aus zumindest zwei Glasscheiben und zumindest einem Scheibenzwischenraum, in dem die Brandschutzmasse angeordnet ist, wobei ein wasserunlösliches Aluminiumsalz, eine anorganische Säure und eine Wassermenge zusammengebracht und zur Brandschutzmasse umgesetzt werden. Die hergestellte Brandschutzmasse enthält hydratisiertes Metallsalz. Die so aufgebrachte Schicht wird über einen längeren Zeitraum bei erhöhter Temperatur getrocknet.EP-A-306 677 describes a method for producing a fire protection composition foamed in the event of fire for fire-shielding glazing, in particular for fire-shielding glazing from at least two glass panes and at least one pane space in which the fire protection composition is arranged, a water-insoluble aluminum salt, an inorganic acid and a quantity of water is brought together and converted into a fire protection compound. The fire protection compound produced contains hydrated metal salt. The layer applied in this way is dried over a long period of time at elevated temperature.

Schließlich beschreibt die DE-A-34 46 202 ein Verfahren zur Herstellung einer lichtdurchlässigen, festen Brandschutzschicht aus einem blähbaren Material, wobei auf ein Substrat (z.B. auf eine Glasscheibe) eine Schicht aus einem in Wasser gelösten hydratisierten Alkalimetallsilikat, die einen Hilfsstoff aufweisen kann, aufgebracht wird und wobei diese Schicht erwärmt sowie dabei in einer Trocknungskammer und mit einer Trocknungsatmosphäre, die Wasserdampf enthält und Helium enthalten kann sowie im Kreislauf geführt wird, bei einer Temperatur von etwa 100 °C getrocknet wird.Finally, DE-A-34 46 202 describes a method for producing a translucent, solid fire protection layer made of an expandable material, a layer of a hydrated alkali metal silicate dissolved in water, which may have an auxiliary substance, on a substrate (for example on a glass pane), is applied and this layer is heated and dried in a drying chamber and with a drying atmosphere which contains water vapor and can contain helium and is circulated at a temperature of about 100 ° C.

Die Trocknungsatmosphäre kann dabei verschiedenartig zusammengesetzt sein.The drying atmosphere can be composed in different ways.

Die vorgenannten Verfahren weisen jedoch den Nachteil auf, daß sich die jeweilige Brandschutzmasse nur auf komplizierte Art und Weise auf die notwendige Viskosität und Transparenz einstellen läßt. Insbesondere bereitet es erhebliche Mühe, solche Brandschutzmassen oder -schichten herzustellen, die frei von Blasen sind, welche zu erheblichen Einbußen bezüglich der Transparenz führen können.However, the aforementioned methods have the disadvantage that the respective fire protection composition can only be adjusted to the necessary viscosity and transparency in a complicated manner. In particular, there is considerable difficulty in producing fire protection compositions or layers which are free of bubbles and which can lead to considerable losses in terms of transparency.

Es war daher Aufgabe der vorliegenden Erfindung, eine flammhemmende Komponente zur Verfügung zu stellen, die die vorgenannten Nachteile nicht aufweist und mit der Brandschutzgläser erhalten werden können, die einen entsprechenden flammhemmenden Effekt aufweisen.It was therefore an object of the present invention to provide a flame-retardant component which does not have the aforementioned disadvantages and which can be used to obtain fire protection glasses which have a corresponding flame-retardant effect.

Gegenstand der Erfindung ist daher die Verwendung von quellfähigen, synthetischen Schichtsilikaten des Saponit- und/oder Hectorit-Typs als flammhemmende Komponente in Brandschutzgläsern.The invention therefore relates to the use of swellable, synthetic layered silicates of the saponite and / or hectorite type as a flame-retardant component in fire-resistant glasses.

Bevorzugt wird quellfähiges, synthetisches Schichtsilikat in wäßriger Lösung verwendet.Swellable, synthetic layered silicate in aqueous solution is preferably used.

Üblicherweise erfolgt die Verwendung des Schichtsilikats zusammen mit üblichen Zusätzen, wie Salzen und nicht-kristallinen Silikaten.The sheet silicate is usually used together with conventional additives, such as salts and non-crystalline silicates.

Die Aufgabe wird auch gelöst durch ein Verfahren zur Herstellung eines Brandschutzglases, welches dadurch gekennzeichnet ist, daß quellfähige, synthetische Schichtsilikate des Saponit- und/oder Hectorit-Typs zwischen mindestens zwei Gläsern eingebracht werden.The object is also achieved by a method for producing fire protection glass, which is characterized in that swellable, synthetic layered silicates of the saponite and / or hectorite type are introduced between at least two glasses.

Bevorzugt werden die quellfähigen, synthetischen Schichtsilikate in Form ihrer wäßrigen Lösungen eingebracht.The swellable, synthetic layered silicates are preferably introduced in the form of their aqueous solutions.

Bevorzugt enthält die Lösung 0,1 bis 30, besonders bevorzugt 3 bis 25 Gew.-% an quellfähigem, synthetischem Schichtsilikat.The solution preferably contains 0.1 to 30, particularly preferably 3 to 25% by weight of swellable, synthetic layered silicate.

Zusätzlich kann die Lösung 0 bis 18 Gew.-% Salze und 0 bis 35 Gew.-% wäßrige Natriumsilikatlösung (bezogen auf den Feststoffgehalt) enthalten. Unter Salze im Sinne der Erfindung sind Sulfate, Chloride, Fluoride, Nitrate, Carbonate, Hydrogencarbonate, Phosphate, Polyphosphate sowie Hydroxide von Lithium, Kalium, Natrium, Ammonium und Magnesium zu verstehen. Zusätzlich können auch nicht-kristalline Silikate enthalten sein.In addition, the solution can contain 0 to 18% by weight of salts and 0 to 35% by weight of aqueous sodium silicate solution (based on the solids content). Salts for the purposes of the invention are sulfates, chlorides, fluorides, nitrates, carbonates, hydrogen carbonates, phosphates, polyphosphates and hydroxides of lithium, potassium, sodium, ammonium and magnesium. In addition, non-crystalline silicates can also be contained.

In Ausgestaltung der Erfindung wird die Lösung in einer Dicke von 1 bis 30, bevorzugt 2 bis 15 mm, zwischen mindestens zwei Gläsern eingebracht. Im allgemeinen wird dazu die Lösung in der vorgenannten Dicke auf eine Scheibe aufgebracht und verteilt und anschließend eine weitere Scheibe aufgebracht.In an embodiment of the invention, the solution is introduced in a thickness of 1 to 30, preferably 2 to 15 mm, between at least two glasses. For this purpose, the solution is generally applied to a disk in the aforementioned thickness and distributed and then another disk is applied.

Gegenstand der Erfindung ist ebenfalls eine Brandschutzscheibe, bestehend aus mindestens zwei Glasscheiben mit einer dazwischen befindlichen flammhemmenden Schicht, wobei die flammhemmende Schicht quellfähige, synthetische Schichtsilikate des Saponit- und/oder Hectorit-Typs enthält.The invention also relates to a fire protection pane, consisting of at least two glass panes with a flame-retardant layer in between, the flame-retardant layer containing swellable, synthetic layered silicates of the saponite and / or hectorite type.

Die Dicke der flammhemmenden Schicht beträgt zwischen 1 und 30, bevorzugt zwischen 2 und 15 mm.The thickness of the flame-retardant layer is between 1 and 30, preferably between 2 and 15 mm.

Die Dicke der flammhemmenden Schicht in der Brandschutzscheibe wird so bemessen, daß die Brandschutznorm der DIN 4102 (Teile 2, 5, 13) erfüllt wird. Insbesondere bei Mehrschichtgläsern werden hohe Feuerwiderstandsklassen erreicht.The thickness of the flame-retardant layer in the fire protection panel is dimensioned so that the fire protection standard of DIN 4102 (parts 2, 5, 13) is met. High fire resistance classes are achieved in particular with multilayer glass.

Die Erfindung wird durch die nachstehenden Beispiele erläutert.The invention is illustrated by the examples below.

Beispiel 1example 1

Ein synthetischer Hectorit (Typ: SKS-21, Hersteller: Hoechst AG, Frankfurt/Main) wurde in Form seiner wäßrigen Lösung (Hectoritgehalt: 12 Gew.-%) auf eine Glasscheibe gegossen und gleichmäßig verteilt, anschließend wurde eine weitere Glasscheibe aufgelegt. Die Dicke der hectorithaltigen Schicht betrug 15 mm.A synthetic hectorite (type: SKS-21, manufacturer: Hoechst AG, Frankfurt / Main) was poured onto a glass pane in the form of its aqueous solution (hectorite content: 12% by weight) and evenly distributed, and then another glass pane was placed on top. The thickness of the hectorite-containing layer was 15 mm.

Beispiel 2Example 2

Eine 4 gew.-%ige hectorithaltige Lösung wurde auf eine Glasplatte gegossen und gleichmäßig verteilt. Dieser Vorgang wurde bei einer weiteren Glasplatte wiederholt und die Glasplatten so aufeinandergelegt, daß man durch Abdeckung mit einer dritten Glasplatte ein Zweischichtenglas erhielt. Die Dicke der Schichten betrug ca. 10 mm.A 4% by weight solution containing hectorite was poured onto a glass plate and distributed evenly. This process was repeated for another glass plate and the glass plates were placed on top of one another in such a way that a two-layer glass was obtained by covering with a third glass plate. The thickness of the layers was approximately 10 mm.

Die Gläser wurden anschließend auf ihre Brandschutzfähigkeit gemäß DIN 4102 hin geprüft.The glasses were then tested for fire protection in accordance with DIN 4102.

Die obigen Brandschutzgläser der Beispiele 1 und 2 erreichen nach DIN 4102 (Teile 2, 5, 13) mindestens die Feuerwiderstandsklasse G 30 bzw. die Feuerwiderstandsklasse F 30.The above fire protection glasses of Examples 1 and 2 achieve at least fire resistance class G 30 or fire resistance class F 30 according to DIN 4102 (parts 2, 5, 13).

Claims (11)

Verwendung von quellfähigen, synthetischen Schichtsilikaten des Saponit- und/oder Hectorit-Typs als flammhemmende Komponente in Brandschutzgläsern.Use of swellable, synthetic layered silicates of the saponite and / or hectorite type as a flame-retardant component in fire-resistant glasses. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß das quellfähige, synthetische Schichtsilikat in wäßriger Lösung verwendet wird.Use according to claim 1, characterized in that the swellable, synthetic layered silicate is used in aqueous solution. Verwendung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Schichtsilikat zusammen mit üblichen Zusätzen, wie Salzen und nicht-kristallinen Silikaten, verwendet wird.Use according to claim 1 or 2, characterized in that the layered silicate is used together with conventional additives such as salts and non-crystalline silicates. Verfahren zur Herstellung eines Brandschutzglases, dadurch gekennzeichnet, daß quellfähige, synthetische Schichtsilikate des Saponit- und/oder Hectorit-Typs zwischen mindestens zwei Gläsern eingebracht werden.Process for the production of fire protection glass, characterized in that swellable, synthetic layered silicates of the saponite and / or hectorite type are introduced between at least two glasses. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß quellfähige, synthetische Schichtsilikate in Form ihrer wäßrigen Lösung eingebracht werden.A method according to claim 4, characterized in that swellable, synthetic layered silicates are introduced in the form of their aqueous solution. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Lösung 0,1 bis 30, bevorzugt 3 bis 25 Gew.-% Hectorit enthält.A method according to claim 4 or 5, characterized in that the solution contains 0.1 to 30, preferably 3 to 25 wt .-% hectorite. Verfahren nach mindestens einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die Lösung zusätzlich 0 bis 18 Gew.-% Salze und 0 bis 35 Gew.-% wäßrige Natriumsilikatlösung (bezogen auf den Feststoffgehalt) enthält.Process according to at least one of Claims 4 to 6, characterized in that the solution additionally contains 0 to 18% by weight of salts and 0 to 35% by weight of aqueous sodium silicate solution (based on the solids content). Verfahren nach mindestens einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Lösung in einer Dicke von 1 bis 30, bevorzugt 2 bis 15 mm zwischen mindestens zwei Gläsern eingebracht wird.Method according to at least one of claims 4 to 7, characterized in that the solution is introduced in a thickness of 1 to 30, preferably 2 to 15 mm between at least two glasses. Brandschutzscheibe, bestehend aus mindestens zwei Glasscheiben mit einer dazwischen befindlichen flammhemmenden Schicht, dadurch gekennzeichnet, daß die flammhemmende Schicht quellfähige, synthetische Schichtsilikate des Saponit- und/oder Hectorit-Typs enthält.Fire protection pane, consisting of at least two glass panes with a flame-retardant layer in between, characterized in that the flame-retardant layer contains swellable, synthetic layered silicates of the saponite and / or hectorite type. Brandschutzscheibe nach Anspruch 9, dadurch gekennzeichnet, daß die Dicke der flammhemmenden Schicht 1 bis 30, bevorzugt 2 bis 15 mm beträgt.Fire-resistant window according to Claim 9, characterized in that the thickness of the flame-retardant layer is 1 to 30, preferably 2 to 15 mm. Brandschutzscheibe nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Dicke der flammhemmenden Schicht so bemessen ist, daß die Brandschutznorm der DIN 4102 (Teile 2, 5, 13) erfüllt wird.Fire protection window according to claim 9 or 10, characterized in that the thickness of the flame retardant layer is dimensioned such that the fire protection standard of DIN 4102 (parts 2, 5, 13) is met.
EP95116469A 1994-11-17 1995-10-19 The use of synthetic silicates for fire-proof glasses Expired - Lifetime EP0712919B1 (en)

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DE4440794 1994-11-17
DE4440794A DE4440794A1 (en) 1994-11-17 1994-11-17 Use of synthetic silicates in fire protection glasses

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DE10237395B4 (en) * 2002-01-24 2012-12-20 C. G. I. International Limited Process for producing fire-resistant glazing and fire-resistant glazing

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DE4440794A1 (en) 1996-05-23
JPH08225345A (en) 1996-09-03
EP0712919B1 (en) 1998-05-06
DE59502094D1 (en) 1998-06-10

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